CVE-2026-28476
Server-Side Request Forgery in OpenClaw Tlon Urbit Extension
Publication date: 2026-03-05
Last updated on: 2026-04-21
Assigner: VulnCheck
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| openclaw | openclaw | to 2026.2.14 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-918 | The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in OpenClaw versions prior to 2026.2.14 and involves a server-side request forgery (SSRF) issue in the optional Tlon Urbit extension.
The extension accepts user-provided base URLs for authentication without properly validating them, allowing attackers who can influence the configured Urbit URL to cause the gateway to make HTTP requests to arbitrary hosts, including internal network addresses.
How can this vulnerability impact me? :
An attacker exploiting this vulnerability can induce the server to send HTTP requests to arbitrary hosts, potentially including internal systems that are not normally accessible externally.
This can lead to unauthorized access to internal resources, information disclosure, or further attacks within the internal network.
However, the vulnerability does not directly impact confidentiality but can affect the integrity of the system by allowing attackers to manipulate internal communications.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know